Home / 157,743.52-217,711.06-100,322.98

Finding the Fourth Proportional to 157,743.52, 217,711.06 and 100,322.98

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Solution

The fourth proportional to 157,743.52, 217,711.06 and 100,322.98 is: 138,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,743.52 : 217,711.06 = 100,322.98 : x
  2. Step 2: Convert to fraction form
    157,743.52/217,711.06 = 100,322.98/x
  3. Step 3: Cross multiply
    157,743.52x = 217,711.06 × 100,322.98
  4. Step 4: Simplify right side
    157,743.52x = 21,841,422,318.16
  5. Step 5: Solve for x
    x = 21,841,422,318.16/157,743.52
  6. Step 6: Final answer
    x = 138,461.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.